Thak you for the link. The book seems very interesting and I'll try to get a copy. But for this moment I don't want to go so deep into details. I'd just like to know, if from Matt 16:19 we can conclude that the power of binding and loosing on earth and in Heaven was a result of having that keys and therefore, logically, the keys were also possessed by other Apostoles, due to Matt 18:18? Or maybe other way round: the keys and binding/loosing were unrelated, and therefore the keys were only in possesion of St Peter? I know all these are only metaphors but very meaningful.